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Factories emit smoke in Jilin province, China, across the Songhua River from where an elderly man exercises on the morning of Feb 24, 2013, after Chinese authorities announced plans to curb pollution. The photo shows the man in the foreground, back to the camera, with buildings on the other side of the river pouring out smoke. REUTERS/Stringer

Wildfires, Air Quality, and the Risk of Lung Diseases

by Christopher Troeger

Respiratory diseases caused by invisible "PM2.5" particles released by wildfires are a significant health risk to people